A STEP-UP CONVERTER WITH SWITCHED CAPACITOR USING A SMALL INDUCTOR IN CCM TO DRIVE POWER LEDS

被引：0

作者：

Rocha, Antonia F. ^{[1
]}

Marques, Edson R. ^{[2
]}

Silva, Carlos E. A. ^{[1
]}

Sa, Edilson M., Jr. ^{[1
,2
]}

机构：

[1] Univ Fed Ceara, Sobral, Ceara, Brazil

[2] Fde Inst Ceara, Sobral, Ceara, Brazil

来源：

2015 IEEE 13TH BRAZILIAN POWER ELECTRONICS CONFERENCE AND 1ST SOUTHERN POWER ELECTRONICS CONFERENCE (COBEP/SPEC) | 2015年

关键词：

CCM; DC-DC converter; Dimming LEDs; SC converters;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper presents the use of a DC-DC step-up converter with a switched capacitor to power light-emitting diodes (LEDs), presented in [11], with a input inductor operating in continuous conduction mode (CCM) and with dimming of LEDs. This converter has the advantage of stabilizing the LED's current in open loop control through frequency modulation, which is obtained according to the input voltage. Therefore, the converter does not need current sensors, allowing cost reduction. The prototype assembled in laboratory was designed for a lamp of 54 W, operating in a frequency of approximately 88 kHz and presented a maximum efficiency of 95.5% and 93.9% in nominal conditions.

引用

页数：5

共 11 条

[1]

Cheung CK, 2010, IEEE INT SYMP CIRC S, P3192, DOI 10.1109/ISCAS.2010.5537944

[2]

dos Santos E. E., 2015, APPL POW EL C EXP AP, p[906, 912]

[3]

dos Santos E. E., 2015, IND APPL INDUSCON IE

[4] A LED Driver With Switched Capacitor [J].